Apparatus for molding cementitious material



A ril 1927.

p 19 J. P. MGKNIGH-r APFARA'LUS FOR MOLDING CEMENTITIOUS MATERIAL Filed June @1925 2 sheetsQsnee' 1 1927 f l,25,486` Apnl J. P. MCKNIGHT APPARATUS Foa MoLDlNG cEMENTTIoUs MATERIAL Filed June 2, n 1925 2 Sheets-Sheet 2 su'. 'y J. L

Patented Apr. 19, 1927.

. PATENT OFFICE.

JOHN P. MCKNIGI-IT, OF REVERE, MASSACHUSETTS.

APPARATUS FOR MOLDING CEMENTITIOUS )MATERIAL Application -inea .nme 2, 1925. semi No. 34,325.

Objects of the invention are to provide an adjustable mold capable of making blocks of different dimensions and configurations, especially of the type known as ashlar; to

arrange and mount the molds in such a manner as to render the necessary operations in the making of the blocks fewer and thus produce a material saving of time and labor; and to provide a new and improved molding apparatus having the features of construct-ion and arrangement hereinafter described.

For purposes of illustration the invention is shown in the accompanying drawings in which- Fig. 1 is a top plan view of the apparatus for molding` cementit-ious material;

Fig. 2 is a section on line 2 2 of Fig. 1;

Fig. 3 is a top plan view of the arm carrying the mold covers g Vand Fig. l is a side elevation of the molding apparatus with the spider and molds .shown in section. Y

As illustrated the reference numeral 1 designates a supporting base made of concrete or other suitable material. Firmly embedded within the supporting base 1 is a shaft 2 having a pin 3 projecting diametrically through its lower end and serving` to assist in maintaining the rigid mounting of the shaft. rlhe shaft 2 passes through a bearing 4 mounted on top of the supporting base 1 bymeans of the bolts 5 and said shaft eX- tending upwardly beyond the bearing receives a spider designated as a whole by the numeral 6.

The spider member 6 consists of two parts 7 and 8 held together by the bolts 9 and nuts 10. The center portion of the spider member 6 forms a hub 12 which is journalled on the shaft 3 and projecting radially from said hub are a number of T-shaped channel members forming the spider.

A plate 13 having a perimeter forming an Octagon is riveted or otherwise fastened to the spider at the points 14. At four diametrically opposite sides of the plate 10 and near the edge thereof are located the molding forms 15.

The forms 15 comprise a removable bottom 17 spaced from the plat/e 13 byv the strips 18, and an adjust-able back member 19 having a vertical portion 2O and horizontal portion 21. The horizontal portion 21 of the member 19 has a` plurality of depending lugs adapted to ride in elongated slot-s formed in the plate 13 and thus permitting the adjustment of the molding formsrela- `tive to said plate. The side walls 22 of the form 15 are hinged to the member 19 thus allowing the sides 22 to swing from open to closed position or vice versa. The front cover 23 of the form 15 is hinged to the plate 13 and has formed in the center an opening 3e adapted to receive the terminal of an air line or other pressure means for compacting the block. Formed in each side and near its edge of the cover 23 are recesses adapted to receive. the front edges of the side walls 22. As will be apparent the rear wall of the mold may be moved toward the center of the plate 13 thus increasing the dimensionsof the mold and brick formed therein without affecting the compactness of the ino-ld inasmuch as the projecting ends of the side walls 22 can move through the .recesses in the front cover 23. It will therefore be obvious that the adjustment of the rear wall is only limited by the extent to which the side walls extend beyond the front cover.

VOn the eXtreme upper end of the shaft 2 an arm 24.- having a hub portion 25 is journalled on said shaft 2. The upper end of the shaft 2 is screw-threaded and a. nut 26 retains the arm in position on the shaft. A t eacfh end of the arm 24 a bracket member 2T is mounted thereon through the medium of the bolts or rivets 28. The space formed between the bracket and the arm contains a loosely positioned threaded wheel 29. The walls of the bracket and arm have aligned elongated slots 30. A screw through the slots 30 and through the nut 2G at its upper end. At the lower end of the screw 31 there is detachably mounted a cover 32 adapted to iit over the top of tl e mold. The pin 33 extends through the collar on the cover and screw 31 and retains the cover in position. Inasmuch as the threaded wheel 29 is loosely mounted in the` space between the bracket and arm and the screw 31 can be laterally moved in the elongated slts 30, it will be apparent that the cover 32 is laterally adjustable. rlhe cover 32 may be raised or lowered by rotation of the wheel 29. y

Two opposite molds are closed and filled, preferably by two operators respectively working at opposite locations, the apparatus is turned 90 and while the two aforesaid molds are being emptied by different 0p- 31 extends Y erators the other molds are lilled by the first operators, and opposite molds are thus alternately illed and emptied. If the molds are lilled from the top the sides and front are held closed in any suitable manner until the top is clamped on, but the molds are preferably illed by forcing the material through a hose or pipe attached to the one inlet l- As the top cover oit the mold, as well as other side= oi the mold, are detachable, it will be olwious that the interior Walls of the mold may be of any eonliguration so as to malte any design ot brick desired.

l claim:

l. Apparatus for moldiuig` eementitions material comprising a supportingv member, a shalt earried by said base member. sup portino' means mounted on the shaft and rotatable about the axis thereof. the supportingY means Carrying at spaced intervals a series oit molding` forms adapted to Coirtain eementitious material and a cover 'for any one ot' said molds earrid by a support mounted on said shaft above said supporting means and rotatable about the axis thereof.

Apparatus :tor molding' eementitious material comprising' a base sulmorting,` member. a shaft Carried by .said base meniber, a spider mounted on the shaft and rotatable about the axis thereof, supporting means on the spider Carrying' at spaced intervals a series of adjustable molding forms adapted to contain eementitious material and an adjustable cover for any one of said molds carried by an arm mounted on the upper end ot said shaft and rotatable about the axis thereof.

Apparatus for molding eementitious uaruWWWaa material comprising a series ot' molds adjustably mounted on a supporting member and rotatable therewith, a plurality of covers for said molds adjustably mounted on a support and rotatable with said sup port.

Ll. Appparatus for molding cementitious material comprising a supporting member, a shaft Carried by said member, supporting means mounted on the sha'lt, the supporting means e: rrying' at spaced intervals a series of molding terms7 and a plurality of covers adjustably mounted on supporting ineans above the tiret mentioned supporting means and adapted to be brought into engagement with said molds.

Apparatus Vfor molding` Cementit-ious material comprising` a supporting member, a sha't't carried by said member, supporting means mounted on the shalt intermediate its ends, the supporting means carrying at spaced intervals a .series ot' molding` forms. an arm mounted on the uper end oli the shaft and a cover 'for the molds depending` trom each end of the arm.

t. Apparatus for nlolding` eementitious material comprising a supporting member` a shaft carried by said member, a spider mounted on the shaft intermediate its ends and rotatable about the axis thereof, supportingr means on the spider carryingi at spaced intervals a series of adjustalide molding forms, an arm mounted on the upper end ot the shaft and rotatable about the axis thereof and an adjustable cover 'tor the molds depending' from each end of the arm.

Signed by me at Boston, Massachusetts, this twenty-ninth day o'l May, 199.5.

JOHN l?. MoKNlGl-T. 

